Difference between revisions of "Oral Cavity Overview - Anatomy & Physiology"
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| + | <big><center>[[Alimentary - Anatomy & Physiology|'''BACK TO ALIMENTARY - ANATOMY & PHYSIOLOGY''']]</center></big> | ||
| + | <big><center>[[Oral Cavity - Cavity - Anatomy & Physiology|'''BACK TO ORAL CAVITY - ANATOMY AND PHYSIOLOGY]]</center></big> | ||
==Introduction== | ==Introduction== | ||
| + | The oral cavity is the first section of the alimentary tract that recieves food. It provides the digestive functions of prehension, mastication and insalivation and also plays a role in the respiratory system through oral breathing when the nasopharynx is impaired. | ||
| − | + | The oral cavity or mouth, consists of accessory structures (the salivary glands), projecting structures (the teeth and tongue) and the walls enclosing the oral cavity. | |
| − | |||
==Anatomical Boundaries== | ==Anatomical Boundaries== | ||
| − | + | *Rostrally by lips | |
| + | |||
| + | *Caudally by pharynx at the level of the palatoglossal arches | ||
'''Outer Vestibule''' | '''Outer Vestibule''' | ||
| − | + | *Teeth and jaw margins medially | |
| + | |||
| + | *Lips and cheeks laterally | ||
| + | |||
| + | *Ramus of the mandible and masseter muscle caudally | ||
'''Oral Cavity Proper''' | '''Oral Cavity Proper''' | ||
| − | |||
| − | |||
| − | + | *Inside the dental arches | |
| + | |||
| + | *Palate dorsally | ||
| + | |||
| + | *Teeth, gums and jaw margins laterally | ||
| + | |||
| + | *Tongue ventrally | ||
| + | |||
| + | *Size altered by raising or lowering the tongue and floor or oral cavity when mouth is closed | ||
| − | + | ==Histology and Innervation== | |
| − | + | *Ectoderm | |
| − | |||
| − | |||
| − | |||
| − | + | *Trigeminal nerve (CN V) | |
| − | |||
| − | + | <big>ADD PICTURE<big> | |
Revision as of 18:58, 30 June 2008
Introduction
The oral cavity is the first section of the alimentary tract that recieves food. It provides the digestive functions of prehension, mastication and insalivation and also plays a role in the respiratory system through oral breathing when the nasopharynx is impaired.
The oral cavity or mouth, consists of accessory structures (the salivary glands), projecting structures (the teeth and tongue) and the walls enclosing the oral cavity.
Anatomical Boundaries
- Rostrally by lips
- Caudally by pharynx at the level of the palatoglossal arches
Outer Vestibule
- Teeth and jaw margins medially
- Lips and cheeks laterally
- Ramus of the mandible and masseter muscle caudally
Oral Cavity Proper
- Inside the dental arches
- Palate dorsally
- Teeth, gums and jaw margins laterally
- Tongue ventrally
- Size altered by raising or lowering the tongue and floor or oral cavity when mouth is closed
Histology and Innervation
- Ectoderm
- Trigeminal nerve (CN V)
ADD PICTURE